General

Engineer's Note

Designed for enterprise servers, this 64GB DDR4-3200 Registered ECC module leverages a quad-rank x4 configuration to maximize memory density and support large-scale virtualization or in-memory database workloads. Its 1.2V operating voltage and CL22 latency, combined with registered signal buffering and ECC error correction, ensure rock-solid data integrity and sustained stability under heavy multi-CPU access.

Technical Specs & Insights

1. A 64GB capacity per module significantly increases memory density per server node, allowing more virtual machines to run simultaneously without hitting resource bottlenecks.
2. DDR4-3200 speed delivers ample throughput for data-intensive workloads, accelerating real-time analytics and in-memory database processing in enterprise environments.
3. ECC protection continuously corrects single-bit memory errors, which is vital for preserving data integrity during long-running scientific computations or financial transactions.
4. Registered signaling buffering stabilizes high-capacity memory configurations, enabling densely populated racks to operate reliably under 24/7 uptime requirements.
5. Quad Rank x4 organization maximizes interleaving and keeps memory channels saturated, improving sustained bandwidth under heavy multi-tenant virtualization loads.

Why These Specs Matter

As a server memory specialist, I’ll highlight why the M386A8K40DM2-CWELY—a 64GB DDR4-3200 Registered DIMM with ECC and quad-rank x4 organization—is indispensable for modern data centers. In virtualized clusters, ECC prevents silent data corruption by correcting single-bit errors in real time, ensuring a flipped bit doesn’t crash critical VMs or corrupt transactional databases. Registered architecture buffers command and address signals to stabilize fully loaded 24-DIMM configurations, which means you can confidently deploy 1.5 TB of reliable memory per node and maximize VM consolidation without signal integrity issues. For in-memory databases like SAP HANA or Redis, the quad-rank x4 design interleaves four internal ranks, effectively boosting bandwidth and minimizing access contention, while the 3200 MT/s speed with a responsive CL22 latency delivers the throughput real-time analytics demand. A 1.2V operating voltage also lowers power consumption versus legacy modules, directly cutting OpEx. This module turns these four attributes into tangible data-center resilience and accelerated data processing.

Endurance & Reliability

General Virtualization
Deploy this 64GB quad-rank RDIMM in dual-socket servers using balanced memory population across all channels. For capacity-optimized virtualization, install one DIMM per channel (e.g., 8 modules for 512 GB) to maintain 3200 MT/s speed, which aggregates adequate bandwidth for mixed VMs. If deeper capacity is required, populate two DIMMs per channel—expect speed to drop to 2933 MT/s, but gain higher total memory for dense, low-intensity workloads.

In-Memory Database
Maximize capacity and low latency by populating every memory channel with a single 64GB module, avoiding multi-DIMM-per-channel configurations that trigger clock speed reductions. A fully-populated, one-DIMM-per-channel setup delivers 512 GB on an 8-channel platform at full 3200 MT/s, ideal for Redis or SAP HANA. The registered ECC design ensures data integrity under sustained, large working sets.

High-Performance Computing (HPC)
Populate all memory channels with one DIMM per channel to achieve the highest possible bandwidth of eight or more 64GB modules at 3200 MT/s, crucial for memory-bandwidth-bound simulations. Avoid populating two DIMMs per channel because the quad-rank modules would force speed down to 2666 MT/s, significantly reducing bandwidth. This 512 GB balanced configuration scales well for computational fluid dynamics and finite element analysis.

Verified Compatibility

Compatibility verified: rigorously tested with Dell PowerEdge R750, HPE ProLiant DL380 Gen10 Plus, Lenovo ThinkSystem SR650 V2, and compatible servers.

FAQ